Scraper blade



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7 UNITED ESTATES PATENT OFFICE; gf 2,329,831 SCRAPER BLADE Le'stcr'GFerguson, Dallas, Tex. 7 Application August 3,1940, Serial No. 350,837 z olai s. (01. 37-141) My invention relates to, new and useful improvements in blades for scrapers, graders or the like and has for its principal object the provision of a blade including a plurality. of sections-,the intermediate section projecting forwardly of the end sections or being offset therefrom I A further object of the invention'consists in the provisionof a bladeformed of a plurality of sections, the intermediate section being adjustable so that its front or cutting edge may be positioned to project beyond the cutting edges of the end sections'orin alignmenttherewith.

A further object of the invention resides in the provision of a blade of the character described formed of .a plurality of sections, the cutting edge of the intermediate section normally projecting forwardly of the cutting edges, ofthegendsections, and the sections being reversible to present different cutting edges.; i z I ..i

Still: another object of the invention consists in the provision of a blade for the purpose described formed of a pluralitt ofsections -each/of. the sectionstbeing reversible to present 'difierent cuttingedges andtheintermediate section bein adjustable rearwardly or forwardly with respect to the end sections Sothatthe forward. cutting edge of the intermediatesectionmay belpositioned forwardly of the forward cutting edges of the end sections or positioned ona straight line therewith.

vWith the above and other objects in .view, which .will appear as the description proceeds, mydnvention consists in the noveldetails of construction, and arrangement of parts, describedin the following. specification and'illustrated in the accompanying drawings, and. while I have illustrated.

and described the preferred embodimentsof the invention, as theynow appear .to me, it will be understood that such changes.- may .be made as will fall within the scope of the appended claims. In the drawings: 1. Fig. 1 isa section through a portionof a scraper bucket andv moldboard therefor, the section" extending through one of the end sections of the scraper blade'on the line ll of'Fig; 3.

Fig. 2 is a view similar. to Fig. 1 through the intermediate section of the scraperiblade on the -line22ofFig.3. m Fig. 3 is a top plan of the scraper blade shown in Figs. 1 and 2.

Fig.-.4 isa front edge shown inFig. 3.

Figs. 5, 6 and '7 are top plans of forms view of the scraper blade.

at 9 and H).

As stated in the objects of my invention the improved form of scraper blade is adapted to. be used in connection with various forms of scrapers or graders and in Figs. 1 and, 2 of the drawings I have indicated at l a portion of a scraperbucket and at 2' a portion of an ordinary moldboar'd to which the blade is adapted tobe attached, the upper projecting surface; of the moldboard being inclined as shown at 3 to support the blade at a corresponding angle. The form of bladeshown in Figs. 1, 2, 3 and 4 of the drawings includes the end sections 4 and Sand the intermediatev section 6, it being noted, more; particularly in Figs. 3

and 40f the drawings, that the adjacent ends of the sections abut, or inother words the inner ends of the end sections 4 and 5 abut with the ends of the intermediate sectionsfi. tudinal edges of the end sectionsare beveled as shown at land 8 while the longitudinal edges of the intermediate sections Gare beveledas shown As shown the intermediate section is of greater width, from beveled edgeto beveled edge than the end sections'4 and 5 and, normally it is intended to have the forward beveled edge 9 projecting beyond the beveled edges 1 of the end sections 4 and 5, but the intermediate section,.6 may be adjusted rearwardly, asshown bydotted lines in Fig. 2 of the drawings,; tobring the beveled edge 9 of the intermediate section 6 in alignment with the beveled edges] of the end sections 4 and 5. In order to-accomrnodate for this adjustment just described the intermediate section is provided with two rows of longitudinally spaced perforations l I, the rows being spaced apart a distance equal to the spacing of the rows from the longitudinal edges of the sectional have illustrated, in Figs. 2 and 3 of the drawings, bolts I2 passing through the openings of the longitudinal row adjacentthe beveled edge i0 and these bolts pass through the moldboard, asshown I quite clearly in Fig. 2 of the drawings, and receive the nuts l3. When the bolts 12 arerintheperforations of the row, adjacent the bevelededge Hi, the forward beveled edge 9 of the section projects beyond the forward edges.- I of the ,end sections 4 and 5. r If the intermediate sectionfi'is to be adjusted rearwardly into;the=dotted .line

position shown in Fig.1 2 thenthe boltsJZ are removed from the openings in the row adjacent the edge 10, the section will be moved rearwardly, and the bolts repositioned inthe openings, H, adjacent the beveled edge 9.. .This will bring the forward "edge 901? the intermediate section fi in alignment with the forward edges 1 ofjhe. end

sections 4 and 5.

I he longi- I sections of the blade may be reversed or turnedover to bring the beveled edges 8 of the end. sections 4 and 5 forwardly and likewise the intermediate section 6 may be reversed or turned-over 1 to bring the beveled edge I0 forwardly, In other words when I refer to reversing these sections I mean to turn them over so that the top; and bottom surfaces are reversed. When the position of the intermediate section 6' is turned-over or reversed the bolts 12 will pass through the row of perforations adjacent the edge 9, when the forward edge ofthe section projects forwardly or beyond the edges of the end sections and then when the intermediate section is moved rearwardly, to bring the "forward edge thereof in alignment with the forward edges of the end sections, the bolts l2 will pass through the row of perforations adjacent the beveled edge Hi.

In Fig. 5 of the drawings I have illustrateda slightly modified form of my invention in which the intermediate section of the blade is shown at H and the end sections at It and 19. The main difference in this modified form of 'the'invention, over that shown in Figs. 1 to 4 inclusive of the drawings, is-in the arrangement of the openings or perforationsin the sections for receiving the bolts for securing the blade to the moldboard. In this modified form of the invention, shown in Fig. 5, each-0t the sections is-reversible oi adapted to be turned-ovr facewise to-bring opposite cuttingedges in-position' forwardly. At the same time the intermediate section I? may be adjusted forwardly or rearwardly-with respect to the. endsections l8 and H] so that the forwardedge of the intermediate section 11- may extend beyond the forward edges of the end-sections |8-and l9, as shown in Fig. 5, or brought into alignment therewith. At 1 have illustrated boltsadapted for securingthe and sections to the moldboard, openings being'provided in the sections for receiving the same. It will-be noted that the bolts are arranged in three rows/and spaced longitudinally. This is found to be of advantage in securing the blade sections to certain forms of scrapers or graders. The intermediate section H of the blade is provided with five rows of longitudinally spaced openings 2| andI have shown bo1ts22- positioned in openings of three rows, the,

three rows nearest the beveled cutting edge 23. When the intermediate section I! is moved rearwardly to bring the beveled cutting edge 24 in alignment with the forward edges of the end sectionsl8 and: I9, the bolts 22 will then be positioned: in the threerows of openings 2| nearest the cutting edge M. This arrangement of openings andbolts is found of advantage in some forms of-devices on whichtheblade is used. The

and sections |3:'2.I1d l9v areformed with the.op-' ,positebeveled. cutting-edges 25 and 26.

In themodified form1of blade, shown. in Fig.

6 of. thedrawings, the bla'de includes the intermediate sectionfiZS' and end=sections 2-'L,-=the-lonbeing beveled as shown at 28 and 29 while the longitudinal edges of the end sections are beveled as shown at 30 and 3|. The end sections are secured to the moldboard or other part of the scraper or grader by bolts 32 while the intermediate section will be secured to the moldboard or other part of the scraper or grader by the bolts 33. In the blade, shown in Fig. 6, the sections are not reversible and neither is the intermediate section adjustable forwardly or rearwardly with respect to the end sections. However, in this form of blade, as in the other forms described, th forward cutting edge 29, of the intermediate section, projects forwardly or beyond the forward cutting edges 3| of the and sections 21. InFige. '7. and 8 of the drawings I have illustrated a still further modified form of the invention, the blade including the intermediate section 34 having the opposite beveled edges 35 and 35 and the end section 3! having the opposite beveled edges 38 and 39-. As shown more particularly in Fig. -8 of the drawings the sections are-curved transversely. The intermediate section will be secured to the moldboard or other part of thescraper or grader by bolts 40 and the end sections 3-1- will besecured to the moldboard or other part ofthe scraper or grade;- by the bolts 4|. As in the modified: form of the invention shown in Fig. 6 of the drawings, the intermediate section of thi modification shown in Figs. 7 and 8 is not adjustable forwardly or rearwardly of the endsection 31. and the sections are not reversible. However, as in all. of the previously described forms of the invention the forward cutting edge 36 of th intermediate section 34, projects forwardly or beyond the cutting edges 39 of the. end sections-31;

In Figss3, 5, 6 and 7-1 have-shown the securing bolts in position in the openings of. the sections of the-blade although the. bolts are not shown as passing through any portion of the -moldboard or other-part of-thescraper or grader.

However; the bolts-havebeen illustrated to: show the manner in which. theywill: be arran ed in theopenings forsecuring the blades of thediflierent forms-to the supporting structures.

In reality the. effective cutting. edge. of the blade is the. forwardly: positioned: edge of theintermediate section, although the forward edges of-the end sections will-act as cutting. edges for removing growth or the. likelabov the surface.

By reducing the lengthof the. effective cutting edge of theiblade, the-scraperregardless of model or size isableitocut a thicker slice, thereby, greatly reducing draft. This; enables-th scraper. or grader toget-a larger load, uicker in, short distance, at a lessoperating fuel cost.

Havingfully described my invention whatI claim as new and desire tosecune bylietters Patent is:

1. A seraperof' the character-described includingand and intermediate sections, arranged. and to end, the. sections beingmreversible. to present either longitudinal edgeforwardly as an operative edge, and'the intermediate section. being adjustable'in either of itsopcsitions forwardly and rearwardly with respect to the end-sections, said intermediate section beingofsubstantialiy greater depth than the end sectionsrsosthat. its rear edge. will'be in alignmentwith the corresponding edge of the end sections when; thefor- I ward edge is projected.

gitudinal edges of the intermediate section 2675 2. A scraper of the charaoter descr ibedincludin'gend andintermediate sections, each of-- the end sections having a singlrow orlongitudinal- 1y spaced openings positioned centrally between the longitudinal edges of the section and the intermediate section being of greater width between its longitudinal edges than the end sections and having two rows oi longitudinally spaced openings, the rows being spaced equal distances from opposite longitudinal edges of the section and the intermediate section being adjustable forwardly and rearwardly with respect mediate section.

LESTER C. FERGUSON. 

